I've been on lithium for a few weeks, increased the dose last week. I have noticed how it made me sleep deeper (but dreams got even worse) right from the start, but this week I feel really drowsy.... sleepy and lethargic from morning til late afternoon. (I'm on a single slow release dose at bedtime). I have two questions. 1) Am I right in thinking this is the Lithium? 2) Will it fall off with time cos I really need to get back to work and falling asleep at work wouldn't be good? Thanks.